What are the classifications of textile machines? The e […]
What are the classifications of textile machines?
The entire knitting industry can be divided into the following four production sectors: full-shaped knitting, flat knitting, circular knitting and warp knitting. In the wool industry, full-shaped knitting and flat knitting are widely used, circular knitting is limited to certain markets, and warp knitting is rarely used.
1.1 Fully formed knitting machine
Traditionally, this kind of machine produces plain-weave wool knitwear in a "classic" style, and the knitted garment pieces are "formed" during knitting. After knitting, the front and back pieces and sleeves are sewn together to make a garment. Full-shape knitting machines are sometimes called variable needle knitting machines, flat knitting machines, "cotton patented machines" or "cotton knitting machines", because as early as the mid-19th century, the patent for this knitting machine was granted to William Cotton . The full-shaped knitting machine uses the needles with whiskers. A long row of needles with whiskers is installed on the straight rod. The entire straight rod is driven by the rotating cam to reciprocate, thus forming a knitting movement. The knitting yarn is placed horizontally on the knitting needle, and the sinker/yarn splitter is located behind the knitting needle. The sinker firmly pushes the yarn against the needle bar of the knitting needle to prepare a loop. Generally speaking, a full-form knitting machine has only one set of knitting needles, so it can only process plain weave fabrics, which requires special rib knitting machines to process the bottom/cuffs. The ribs are placed on the “uninterrupted” knitting rod, or manually transferred to the full forming knitting machine, or automatically transferred, depending on the age of the machine. The pattern design capabilities of fully formed knitting needles are limited to plain weave fully formed knitted pieces. The machine with rotating needle and intarsia function can weave the very famous "diamond" pattern. Due to the gentle knitting process of these machines, even if the machine processes very fine fine yarns, it can run faster if possible, and the knitting efficiency is high. The stitch length of the full-form knitting machine ranges from 9gg relative course (needles per 1.5 inch) to the ultra-fine 33gg.
1.2 Flat knitting machine
Due to the nature and arrangement of the knitting bed, it is sometimes called a "flat bed" or "V-bed" knitting machine. There are two needle beds on the knitting bed in opposite directions, and the needle bed is installed at the top to form an inverted "V" Font. The knitting needles in the needle groove slide up and down on the needle bed, which is called a "snare". In this case, the stitch length refers to the number of needles per inch. The frame or "triangular seat" crosses the needle bed, and the knitting needles are selected when reciprocating left and right. When the carriage passes through the two needle beds, it actually raises or drops the knitting needles on the two needle beds at the same time according to the desired pattern. The length of the needle bed can range from 1.0 m width to 2.2 m width. The reason why these machines can be so flexible and versatile for each length is that in addition to their almost unlimited pattern design capabilities, the coil can be from one Needle bed
Move to another needle bed, and the needle bed can move relatively linearly. Not only can this form a knitted piece, but it also creates a very broad pattern design possibilities, such as the "Aran" pattern used on sweaters. Moreover, the pockets, collars, trims and V-neck, etc. as clothing accessories were originally added in the sewing process, but they can now be woven as a component of the knitted piece.
Advanced technology can now make the machine weave a complete garment without any sewing process. There are two ways to use this complete knitting technology, one is to use a modified V-shaped bed, and the other is to use a special machine with four needle beds.
1.3 Circular knitting machine
There are many types of circular knitting machines, which produce very long cylindrical fabrics. These fabrics are often produced after thinking about very specific end uses. Single-jersey knitting machine The single-jersey knitting machine is equipped with only one needle "cylinder", about 30 inches in diameter, for processing plain weave fabric (single layer). The production of wool fabrics with single-jersey knitting machines is often limited to a gauge of 20 or thicker, because this gauge can use double-stranded wool yarns and produce knitted fabrics without course skew. Another inherent characteristic of wool single-sided fabrics is that the edges of the fabric tend to roll inward. When the fabric is in a cylindrical shape, this is not a problem, but once it is cut, it can cause problems if the fibers are not well organized. Other machines based on single-jersey knitting include: loop knitting machines, which are the basic equipment for pile fabrics. The pile fabric is knitted by threading two yarns into the same loop, one is the base yarn, One is a circle of yarn. These prominent coils are
In the finishing stage, brush or fleece again to form a fleece fabric. The sliver knitting machine is a modified single jersey knitting machine, which can grasp the wool fiber sliver and weave it into a knitted structure